Temporary Objects
It is always possible to create a temporary instance of a class by writing the class name followed by parentheses, within which the constructor arguments, if any, are specified. If there are no arguments to be used in the constructor of the instance, the parentheses must still be written. The constructor function will then be called when the temporary instance is created.
For Example,
Distance create ( int feet, float inches )
{
return Distance ( feet, inches ) ;
}
In some circumstances, it may be essential for the compiler to create a temporary object. For example, when a function is called that takes a class object passes into or out of it by value. When a compiler generates a temporary object of a class that has a constructor, it must invoke a suitable constructor for the temporary object. Similarly, a destructor must be applied to a temporary object of a class that has a destructor.
For Example,
void Func ( Distance v )
{
// . . .
// . .
}
